Step-by-step Solution:

1. Substitute the Operators

• Original expression: 40 * 12 + 3 - 6 ÷ 60
• Given code: * means +, + means ÷, - means *, ÷ means -
• New expression: 40 + 12 ÷ 3 * 6 - 60

2. Solve the New Expression

1. Division: 12 ÷ 3 = 4
   
   Expression becomes: 40 + 4 * 6 - 60
2. Multiplication: 4 * 6 = 24
   
   Expression becomes: 40 + 24 - 60
3. Addition: 40 + 24 = 64
   
   Expression becomes: 64 - 60
4. Subtraction: 64 - 60 = 4

Conclusion:

The final value of the expression is 4.